batcock



(No Model.) 2 Sheath-Sheet 1.

O. E. 8: J. W.,BATGOGK.

SAW SETTING APPARATUS. No. 566,290. Patented Aug. 25, 1896 (No Model.) 72 Sheets-Sheet 2. G. E. 81; J. W. BATGOGK.

SAW SETTING APPARATUS. No. 566,290. Patented Aug. 25, 1896..

UNiTED STATES ATENT @FFICE.

CHARLES EDVV'ARD BATOOGK AND JOSEPH WVILLIAM BATOOCK, OF LONDON,ENGLAND.

SAW-SETTING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 566,290, dated August25, 1896.

Application filed Augu t 2'7, 1894. Serial No. 521,421. (No model.)Patented in England April 27, 1894, No. 8,335.

To all whom zit may concern:

Be it known that we, CHARLES EDWARD BATOOCK and JOSEPH WILLIAM BATCOCK,subjects of the Queen of Great Britain, and residents of Ponders End,London, in the county of Middlesex, England, have invented certain newand useful Improvements in Saw- Setting Apparatus, (for which we haveobtained a patent in Great Britain, No. 8,335, dated April 27, 1894,) ofwhich the following is a full, clear, and exact specification.

This invention relates to an appliance for setting the teeth of saws,and the same is carried out in the following manner, reference beingmade to the annexed drawings in which- Figure 1 is a plan view showingour invention; Fig. 2, an elevation, to enlarged scale, of one of thesetting-jaws; Fig. 3, a section through line a; y in Fig. 1; Fig. 4, anelevation, to enlarged scale, of the feeding motion for the saw. Fig. 5is a side elevation of feed mechanism; Fig. 6, a plan view of same.

a is a base-plate which is mounted upon a table or support I). Thisbase-plate a carries two jaws c and d, the jaw a being fixed and the jawd pivoted or hinged at e.

f f are two serrated plates which are attached to the bosses 9, saidbosses sliding in apertures or guides in the jaws c and cl.

h h are plates which form the faces of the jaws.

i i are spiral springs which bear upon the plates f f and maintain themin what may be termed their normal position.

j j are two levers of the shape shown, which are pivoted to the jaws cand d at 75.

Z is a rod which carries the bar m, and it will be seen that the descentof this bar m will cause the ends j of the levers j to separate and thusbring the serrated plates together, owing to their being connected tothe ends 3'' of said levers j, Fig. 3.

'n is a spindle which is screwed and is operated by the handle 0 for thepurpose of operating the movable jaw (1 so as to clamp the saw 19between the faces h h of the jaws c and d.

In Figs. 1 and 4 q is a small clamp which slides upon the V plate orguide 7" and which has a movable jaw s, pivoted at t, which clips thesaw-blade 19 through the medium of the set-screw a.

o is a stop piece which slides upon the plate or guide 0, and may besecured at a desired part thereof by means of the set-screw w. The plateor guide 0" has a dovetail as, which slides in a groove in theright-angleshaped piece y. This piece g has a groove which slides in adovetail secured to the table or support I).

s and 1 are set-screws which secure the sliding parts in question sothat they may be adjusted as required. The stop-piece o regulates theplay of the clamp q between the stop-piece o and ridge 2 on the plate orguide 7'.

The operation is as follows: The saw-blade p is clamped between the jawsc and d. The bar at is now caused to descend by means of a foot-pedal orother suitable motive power, and the teeth or serrations 3 will engageon the teeth of the saw-blade 10 and set them alternately to each sideof the blade. When one batch of teeth has been set, the vise q isreleased and slid along the guide a" to the stop-piece s, when the viseis again caused to grip the saw. It is then slid back to the other endof guide 7 carrying the saw with it. Thus a fresh batch of teeth isplaced between the jaws aand a. The saw-blade p is now moved through adistance regulated by the moving clip q, that is, the distance betweenthe ridge or shoulder 2 and the stoppiece '12. WVhen it is desired toset a circular saw, the serrated edges are formed semicircular and thesaw is mounted on a bearing which is carried upon an upright rod, thisrod being inserted in the aperture 4 in the boss 5, attached to thefixed jaw c. The saw is then turned around as the teeth are set.

It will be seen that the details of the invention may be varied withoutdeparting from the principle of our invention.

5 5 5 5 are guide-pins inserted in the jaws c and d and which hold theplates h h in place. By employing the guide-pins as setscrews the amountof set given to the saw may be Varied, owing to the guide-pin alteringthe relative position of the serrations or teeth 3 and the plate h andso alters the amount of the set given to the teeth of the saw. Theamount of set given to the teeth may also be varied by regulating theamount of movement of the bar m When operating the appliance.

Having thus described our invention, What We desire to claim and secureby Letters Patent is- In apparatus for setting the teeth of saws incombination, two jaws, one fixed and the other movable, said jawscarrying flat, n1ovable serrated plates, attached to sockets; pivotedlevers operating said plates, a bar bearing upon the curved ends of saidlevers, and operating same, springs for controlling the

